Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 354 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
2. 2.Which of these is measured in watts (W)? (a) current (b) resistance (c) power (d) voltage
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.📏 How many amperes (A) is 2140 mA? =
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
6. 6.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) energy used each second (d) how much a part resists
7. 7.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
8. 8.Which of these is measured in amperes (A)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) voltage
9. 9.📏 How many watts (W) is 4 kW?
10. 10.True or false: current is measured in amperes (A). (a) False (b) True
11. 11.📏 How many watts (W) is 0.5 kW?
12. 12.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
13. 13.📏 How many watts (W) is 3.2 kW?
14. 14.📏 How many amperes (A) is 2950 mA? =
15. 15.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
16. 16.📏 How many amperes (A) is 210 mA? =
17. 17.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
18. 18.True or false: current is measured in watts (W). (a) False (b) True
19. 19.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
22. 22.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
23. 23.📏 How many milliamperes (mA) is 2.94 A?
24. 24.📏 How many milliamperes (mA) is 2.49 A?
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
26. 26.True or false: the ammeter measures voltage. (a) False (b) True
27. 27.📏 How many ohms (Ω) is 5.5 kΩ?
28. 28.📏 How many watts (W) is 1.6 kW?
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
30. 30.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
31. 31.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) the push of a cell (d) resistance
32. 32.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
33. 33.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
34. 34.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
35. 35.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
36. 36.True or false: the ammeter is joined across a part. (a) True (b) False
37. 37.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
38. 38.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
40. 40.📏 How many kilowatts (kW) is 4700 W? =

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